import org.lwjgl.LWJGLException;
	import org.lwjgl.opengl.Display;
	import org.lwjgl.opengl.DisplayMode;
	import org.lwjgl.opengl.GL11;
	import org.lwjgl.input.Keyboard;
public class Ejemplo {
	


	    public void start() {
	        try {
	            Display.setDisplayMode(new DisplayMode(640, 480));
	            Display.create();
	        } catch (LWJGLException e) {
	            e.printStackTrace();
	            System.exit(0);
	        }

	        // Init OpenGL
	        GL11.glMatrixMode(GL11.GL_PROJECTION);
	        GL11.glLoadIdentity();
	        GL11.glOrtho(0, 640, 480, 0, 1, -1);
	        GL11.glMatrixMode(GL11.GL_MODELVIEW);

	        boolean quit = false;

	        while (!quit) {         
	            // Clear the screen.
	            GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);

	            // Begin drawing
	            GL11.glBegin(GL11.GL_TRIANGLES);
	                // Top & Red
	                GL11.glColor3f(1.0f, 0.0f, 0.0f);
	                GL11.glVertex2f(0.0f, 1.0f);

	                // Right & Green
	                GL11.glColor3f(0.0f, 1.0f, 0.0f);
	                GL11.glVertex2f(1.0f, 1.0f);

	                // Left & Blue
	                GL11.glColor3f(0.0f, 0.0f, 1.0f);
	                GL11.glVertex2f(1.0f, -1.0f);
	            GL11.glEnd();

	            Display.update();

	            if (Display.isCloseRequested() || Keyboard.isKeyDown(Keyboard.KEY_ESCAPE))
	                quit = true;
	        }

	        Display.destroy();
	    }

	   /*public static void main(String args[]) {
	        Ejemplo ct = new Ejemplo();
	        ct.start();
	    }*/

	}
